Train travellers embrace the sound of silence

Quiet carriages will be made a permanent feature on three intercity train lines around Sydney.

The Minister for Transport Gladys Berejiklian says the trial of the carriages has been well received on the Blue Mountains, South and Central Coast lines.

Commuters who use the carriages at the front and rear of trains are expected to turn mobile phones to silent, keep headphone volume down, and move to another carriage if they want to have a conversation.

Ms Berejiklian says commuter attitude has been vital to the success of the scheme.

"They work on an honour system and I'm pleased that customers have really been respecting each others right to a quiet experience," she said.

"Those customers who don't want the quiet experience obviously can go to another carriage, but I'm really pleased that customers are respecting each other's space."